Water heater



FeB. 26, 1935. c. 9v. vl-:ALE 1,992,789

WATER HEATER 'Filed' April 13, v1951 Gmane Il( VEALE.

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Patented Feb. 2c, 193s t e 1,992,789

4uNrrrzD STATES PATENT o1-FICE WATER HEATER George W. Veale, Cleveland, Ohio, assignor to Eaton Manufacturing Company, Cleveland, Ohio, a corporation of Ohio Application April 13, 1931, sorua 1re/scaccoA A comme. (ci. 2x1-12,3)

This invention relates to heaters `for motor therethrough and within the vehicle body, this vehicles and especially automobiles, and has ior., ian being operated by an electric niotor 22. one o! its objects the provision oi means for auto- 'I'he usual Storage battery o! the automobile matically controlling the supply of heat 'to the is indicated at 23 and one side of this battery 5 motor vehicle. is connected with the motor 22 by anl electric: 5

A further object of the invention is to provide conductor 24 through the manually Operable a system oi automatic control for .that type of Switch 25. The return Wire from the motorv22 heater which utilizes the cooling medium of the may be SI'Ounded 0n the frame 0r Other Part 0f engine so that the ian of the heater unit will the automobilel BS indicated at 26- not be operated until the temperature oi the In the form `0f the invention illustrated in 10 water in the cooling system reaches a desired Figs. 2 and 3, a Casing 27 1S COIlneeted G0 the temperature. conduit 13 so that the hot water passing from A further object of the invention is to prothe 11101301 11 t0 the l'adiior 12 Will DSSS through vide means for automatically stopping the ian the casing. The casing 27 has a lateral extenl5 in cases where it is inadvertently left running, sion 28 to provide a chamber in which the bell5 when the vehicle motor is stopped, lows 29 of a thermostat is positioned. This bel- Other objects of the invention and the fea- 10WS 29, iS 0f the usual type Which 'iS made 0f tures of novelty will be apparent from the fo1 exible metal and contains a liquid having a lowing description taken in connection with the relatively 10W boiling Point S0 that When the belaccompanying drawing, of which lows is surrounded by hot water the liquid there- 20 Fig. 1 is a fragmentary longitudinal sect-,ien in will be vaporized and will generate a pressure through an automobile, having my invention ap- Within the bellOWS which Will Cause its eXpanpliedthereto; sion. f Fig. 2 is an enlarged longitudinal section' The extension 28 iSeDlOVided With a Cel) 30 through Aa thermostatic device constructed in and the bellows 29 has soldered or otherwise se- 25 accordance with my invention; cured thereto a ange 31 which supports the Fig. 3 is a view simar to Fig, 2 but showing bellows and is secured between the end oi the the parts in a different relativev arrangement; extension 23, and the Cap 30, gSke'GS 32 being and provided to prevent leakage. 'Ihe bellows 29 80 Fig, 4 is a View similar to Fig 2 but Showing and the flange 31 thus divide the chamber, 30 another iorm of thermostatic device embodying formed Within the extension 28 and theteap 30, my invention. I into'two sections, the upper section being in Referring to the drawing, l0 indicates, dieopen communication with the interior of the grammatically, the body of an automobile which Casing 27 S0 that the upper DOItOn 0f the 35 will usually be of the closed type The engine bellows V29 will be surrounded by the cooling 35 is indicated at 1l and the usual radiator, of medium Which iOWS thlOllgh the @Onduit 13.' the cooling system, is indicated at12. A conduit The eiid'wail 0f iShe Cap 30 i135 an Opening 13 connects with the upper part ofthe water 33 therein and a P1001! 0f insulating material' jacket of the engine 11` and conveys the hot 34 covers this opening and is secured to the cap water to the upper part of the radiator 12. A b? the screws 35' A Contact member .36 is car' 40 conduit 14, containing o pump 15, returns the rediy thttblllochBi ,ggd fflms gnesl'f Oftln v eecricswic, eoersieowic is e god ttmpl Lofwepitu Illa contact member 37 that is mounted on the lower ik gine 1L end of the bellows 29, directly over the contact e a 16,1 have indicated a heating radiator for 'oeyw 22 tist teftt 45 the control of the automobile body l0, this radiais grounded in any suitable manner and for tor being Supported from the dash 17 by means this purpose, I have illustrated an ear 39 the of any suitable `form of bracket 18. A conduit nange 31 and a ground wire 40 connected with 19 supphes the hot water to the upper part of this ear so that, by means of the, grounds 26 the ,radletOi 16. and a COIidllli' 20 returns the and 40, the one side of the circuit for the motor water from the lower part of the radiator 16 to 22 includes the switch comprising the contact the conduit 14, preferably on the intake side of members 3,6 and 37. y the pump 15. A fany 21 is associated with the The casing 27 has a lateral outlet 41 towhich radiator 16 for the 'purpose of circulating air the conduit 19 is connected and ashut-oif Valve 55 the casing 48 of the thermostat device.

42 may be provided in this conduit for preventing flow 'of the cooling medium of the motor,

through the radiator 16, in warm weather or when it is not desired to operate the heating unit in the vehicle.

A buttery valve 43 is pivotally mounted in the outlet 41 and an operating i'od 44, attached to the upper end of the bellows 29, is operatively connected with the valve 43 by means of the link 45. In Fig. 2, the valve 43 is shown in its closed position and this is the position that the valve assumes when the temperature of the cooling medium of the engine is below the predetermined degree at which the thermostat will actuate the valve.

' In Fig. 3, the valve 43 is in the open position 'which permits the `cooling medium to flow through the conduit 19 to the radiator 16. It will be noted that the bellows 29 is shown expanded in Fig. 3 and this expansion also causes the contact member 37 to engage with the con-Y tact member 36, thereby permitting current to ow to the motor 22, provided the switch 25 is closed. The switch 25 may be of the usual type of rheostat switch by which the speed of the motor 22 may be regulated and this switch als'o serves as a means for preventing operation of the fan.2j1.at the will of the operator.

In the form of the invention illustrated in Fig.

4, a fitting 46 is arranged in the conduit 13 and this fitting has a branch 47 which connects with The casing 48 has a lateral extension 49 to provide a chamber for the bellows 50 and this extension is provided with a cap 51, similar to the cap 30. The cap 51 carries ablock 34 of insulation and this block carries a contact member 36 which cooperates with the contact member 37, the same as previously described in connection with theV form of the invention illustrated in Figs. 2 and 3. The casing 48 has a butterily valve 52 pivotally mounted therein for controlling the iiow of the cooling liquid through the conduit 19. The upper end of the bellows 50 carries an operating rod 53 which is connected with the valve 52 by the link 54 so that the valve 52 will be actuated in substantially the same way as previously described in connection with the valve 43. There is an opening 55 through the valve 52 which lallows a small amount of liquid to circulate through the heater 16 whenever the shut-off valve 42 is open. This insures that some of the coolingmedium iiowing through the fitting 46 will be diverted through the casing 48 and thus subject the thermostat to the temperature of the cooling medium.

Both forms of the invention operate in substantially the same way. Assuming that the shut-off valves 42 and that the switch 25 is closed, and that the engine 11 is just being started, the cooling water of theengine will be relatively cold and the bellows of the thermostat will be in the contracted condition so that the valves 43 and 52 will be closed and none of the cooling Water will iiow through theradiator 16. On account of the contact member 37 being spaced from the contact member 36, under these conditions, no current will flow through the circuit to the motor 22 and the latter will, therefore, not operate. When the temperature 'of the water has risen to a predetermined degree, say 100 F., the bellows 29 or 50 will then expand and thereby open the butterfly valves and close the contacts 36 and 37, which will automatically start the motor 22. In this manner, the operator of the vehicle merely has -to close the switch 25 y standing and this would drain the battery 23 and, if the motor 22 were allowed to operate under these conditions for a suilicient period, the battery 23 might be run down to the point where it would be practically dead. My invention overcomes this difliculty by insuring that, when the temperature of the cooling water of thevengine becomes lowered below the point at which the thermostat operates, the latter will automatically withdraw the contact 37 from the contact 36, thereby opening the V,circuit of the motor 22 and stopping the latter. My invention, therefore, not only insures that the fan 21 will not operate until the temperature of the cooling water has reached the desired degree, but also serves as a. safety device to prevent undue drain on the battery 23.

Having thus described my invention, I claim:

1. The combination with the engine of a motor vehicle and the cooling system for the engine, of a radiator having a motor-driven Ian associated therewith to circulate. air therethrough, means connecting said radiator with said 4cooling system so that the cooling medium Vof said system may be circulated through said radiator,said connecting means including a casing through which the cooling medium iiows, a thermostat in said casing, a valve operatively connected with said thermostat, said. thermostat being operative to open said valve when the teinperature of the cooling medium exceeds a predetermined temperature and to close the valve below said predetermined temperature and thereby controlling the ow oi.' said cooling medium to said radiator, a source of electricity and circuit connections therefrom to the motor of said fan, and said connections including a switch actuated by said thermostat to close the circuit when the temperature of the cooling medium exceeds said predetermined temperature.

2. The combination with the engine of a motor vehicle and the cooling System for the engine, of a radiator having a motor-driven fan associated therewith to circulate air therethrough, means connecting said radiator with said cooling system so that thecooling medium of said system may be circulated through said radiator, said connecting means including a oasing through which the cooling medium flows, a

bellows-type thermostat having a supporting ange secured thereto intermediate its ends. said casing having a chamber and a removable cap therefor, said flange being secured between said cap and the casing and with said bellows, dividing said chamber into .two non-communicating sections, the portion of said bellows on one side` of said flange being surrounded by said cooling.

medium, an electric switch in one of said chamber'sections operatively connected with and automatically controlled by said thermostat to close said switch when the temperature of the cooling medium rises to a predetermined temperature, a source of electricity and circuit connections therefrom to the motor of said fan, said 75 circuit connections including said switch. a valve for controlling the ilow of said medium to said radiator, and means connecting said valve with said thermostat and whereby the valve isautomatically opened when the temperature of the gine, of a radiator having a motor-driven ian` associated therewith to circulate air therethrough, means connecting said radiator with said cooling system so that the cooling medium oi said system may be circulated through said radiator, said connecting means including` a casing through which the cooling medium ilows. a

bellows-type thermostat -having a supporting flange secured thereto intermediate its ends. said casing having a chamber and a removable cap therefor, said nange being secured between said capand the casing and. with said bellows, dividing said chamber into two non-communicating sections. the portion of said bellows on one side of said ilange being surrounded by said cooling medium, a valve for controlling the ilow oi said medium to said radiator, and means connecting 'said valve with said thermostat and whereby the valve is automatically opened when the temperature of the cooling medium rises above Vsaid predetermined temperature and closed below said predetermined GEORGE W. VEALE. 

